To have international accounts, you just need an address with a legit postal code. Nothing else. For the phone number add anything, anything works. For the bank account, you just need to do what Pete said. Go first to the New Zealand AppStore without logged in, look for a free game, then iTunes will ask for an account, tell them you don't want to add a bank account, ....
Here are my fake addresses, if someone want to move in with me for iTunes purposes, join its free xD
In Canada I live here according to iTunes xD
Quebec H7E 1V5
Or in New Zealand I live here xD:
I have accounts for New Zealand, Australia, Japan, Canada, US, Finland, France, Germany, and more that I cant remember...
To manage that, do it here:
Now go on a try all those fantastic soft launch titles like Hordes of Heroes, for example...